dvd-r ?

[EVOEvo]

say u have a 4 speed burner can u burn a 1x dvd-r at 4x or a 1x at 2x on a 2x burner or would this cause for a bad burn cause i got a dvd-r tobisha 2x and i burn games at 2x and they wont play so im thinking maybe my media is 1x cause come to think of it it said 1x but on speical burners u can use 2x but mine was not listed on the list that can burn 2x